I'm having a little issue with a Hobart AM15T. It is definitely going through rinse probe assemblies (p/n 328994) the last one lasted one week. I called Hobart and they came and changed the rinse probe. It's working fine just as when I changed it. I just wanted to check and see if you all had any thoughts on wether it was maybe cheap parts that I was using or have you heard of something else that might cause this ? We had been paying around 80 dollars for these but I see partstown sells them for 201? Hobarts thermister cost around 85. They have changed this part befor too.